CN108815757A - A kind of extinguishing method - Google Patents
A kind of extinguishing method Download PDFInfo
- Publication number
- CN108815757A CN108815757A CN201810746652.8A CN201810746652A CN108815757A CN 108815757 A CN108815757 A CN 108815757A CN 201810746652 A CN201810746652 A CN 201810746652A CN 108815757 A CN108815757 A CN 108815757A
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- fire
- gear
- extinguishing
- rack
- cooling water
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- 238000000034 method Methods 0.000 title claims abstract description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 56
- 239000006260 foam Substances 0.000 claims abstract description 43
- 239000007788 liquid Substances 0.000 claims abstract description 42
- 239000000498 cooling water Substances 0.000 claims abstract description 40
- 239000004744 fabric Substances 0.000 claims abstract description 13
- 238000009434 installation Methods 0.000 claims description 22
- 238000005507 spraying Methods 0.000 claims description 13
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 230000001502 supplementing effect Effects 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 2
- 238000001816 cooling Methods 0.000 abstract description 2
- 239000011493 spray foam Substances 0.000 abstract 1
- 230000011218 segmentation Effects 0.000 description 13
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 10
- 239000003795 chemical substances by application Substances 0.000 description 7
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 6
- 229910002092 carbon dioxide Inorganic materials 0.000 description 5
- 239000001569 carbon dioxide Substances 0.000 description 5
- 230000002349 favourable effect Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 3
- 235000017557 sodium bicarbonate Nutrition 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000077 insect repellent Substances 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 206010003497 Asphyxia Diseases 0.000 description 1
- 241000255925 Diptera Species 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C27/00—Fire-fighting land vehicles
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/02—Nozzles specially adapted for fire-extinguishing
- A62C31/03—Nozzles specially adapted for fire-extinguishing adjustable, e.g. from spray to jet or vice versa
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/28—Accessories for delivery devices, e.g. supports
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C5/00—Making of fire-extinguishing materials immediately before use
- A62C5/02—Making of fire-extinguishing materials immediately before use of foam
- A62C5/022—Making of fire-extinguishing materials immediately before use of foam with air or gas present as such
Landscapes
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The invention belongs to fire fire-fighting technical field, specifically a kind of extinguishing method；This approach includes the following steps：Evacuating personnel is carried out to scene of fire, part combustibles are isolated；Prepare that railway carriage is provided with foam solution and railway carriage is provided with the fire fighting vehicle of cooling water and each one and reaches scene of fire；Residential power is closed, cooling above-water method is sprayed to fire source and fire source surrounding combustible with the fire fighting vehicle equipped with cooling water, part fire source is knocked out and makes the reduction of fire source temperature；Meanwhile being put out a fire with the fire fighting vehicle equipped with foam solution to fire source and fire source surrounding combustible spray foam liquid, on the cooling water sprayed before directly overlaying foam solution, fire source and air are separated, and make the reduction of fire source temperature, the intensity of a fire is avoided to expand；For the fire source for being partially not easy to put out by water, covered using large size wet cloth, until knocking out the fire of scene of fire；The present invention improves the efficiency of home fire fire extinguishing by cooling water and foam solution cooperation fire extinguishing.
Description
Technical Field
The invention belongs to the technical field of fire fighting, and particularly relates to a fire extinguishing method.
Background
In summer, the mosquitoes in the room are increased every night, the common resident houses can start the mosquito-repellent incense, sometimes the mosquito-repellent incense is overturned by the domestic small animals or blown by wind at the door to cause fire, and the fire causes great loss to the life and property of people, so that fire extinguishing measures need to be found out actively.
To grasp the method of fire extinguishing, we first need to know the necessary conditions of combustion, and after the necessary conditions, we only need to destroy the necessary combustion conditions to achieve the purpose of fire extinguishing. The three burning elements are oxygen, combustible material and the ignition temperature of the combustible material, and in the burning process, one of the three elements is not necessary. We can start from these three elements, and can extinguish fire by blocking any one of the three elements. Thus, several methods are derived: 1. the cooling fire extinguishing method is that the fire extinguishing agent is sprayed directly onto burning matter to lower the temperature of the combustible matter below the burning point and to stop burning. 2. The isolation fire extinguishing method is to isolate or evacuate the burning objects from the nearby combustible substances to stop the burning. 3. The fire extinguishing by suffocation is to stop air from flowing into burning area or to dilute air with incombustible matter to make the burning matter to stop oxygen combustion and extinguish. 4. The fire suppression method is to spray chemical fire extinguishing agent into the burning area to participate in the chemical reaction of burning and to stop the burning reaction.
The fire extinguishing method is selected according to the nature and the burning characteristics of burning substances, the specific situation of a fire scene and the performance of fire-fighting technical equipment. In some fires, it is often desirable to use several methods of extinguishing the fire simultaneously. Therefore, aiming at the fire disaster of residential houses, the problem to be solved by people is how to master the fire extinguishing time, make good cooperation, fully exert the efficiency of various fire extinguishing agents and quickly and effectively extinguish the fire disaster. Of course, regardless of the fire extinguishing method, the fire should be quickly extinguished on the premise of guaranteeing the life safety of the user.
Disclosure of Invention
In order to make up for the defects of the prior art, the invention provides a fire extinguishing method, which aims to quickly extinguish the house fire and improve the fire rescue efficiency. The invention reduces the temperature of the fire source by using cooling water, separates the fire source from oxygen by using the foam liquid, covers the fire source by using a large-size wet part, and combines a plurality of fire extinguishing modes, thereby being beneficial to quickly extinguishing the large fire of a house and improving the fire rescue efficiency.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a fire extinguishing method, which comprises the following steps:
the method comprises the following steps: people are evacuated from the fire scene, and part of inflammable matters are isolated;
step two: after people are evacuated and inflammable matters are separated in the first step, preparing a fire-fighting truck with foam liquid in a truck box and a fire-fighting truck with cooling water in the truck box respectively and driving the fire-fighting trucks to a fire scene; according to the size of a fire, a plurality of fire extinguishing fire fighting vehicles with foam liquid in the carriage and a plurality of fire extinguishing fire fighting vehicles with cooling water in the carriage can be prepared according to the ratio of 1: 1; wherein the foam liquid is carbon dioxide liquid;
step three: after two fire-fighting fire trucks on the fire scene in the second step are prepared, the power supply of the house is turned off, the fire-fighting fire trucks filled with cooling water are firstly used for spraying water to a fire source for fire extinguishing, part of the fire source is extinguished, and the temperature of the fire source is reduced; meanwhile, a fire extinguishing fire truck filled with foam liquid is used for spraying the foam liquid to extinguish fire, so that the foam liquid directly covers the previously sprayed cooling water, the fire source is separated from the air, the temperature of the fire source is reduced, and the fire is prevented from expanding;
step four: after the fire source is sprayed with cooling water and foam liquid, spraying cooling water to the combustibles around the fire source by using a fire-fighting truck filled with cooling water, and spraying foam liquid to the combustibles around the fire source by using the fire-fighting truck filled with foam liquid, so that the foam liquid directly covers the previously sprayed cooling water, and the fire source and the combustibles around the fire source are separated, thereby avoiding the expansion of the ignition range;
step five: after the fire source and surrounding combustible materials are separated in the fourth step, a large-size wet cloth is adopted to cover part of the fire source which is not easy to extinguish, the large-size wet cloth is just large enough to cover the fire source, and a fire extinguishing fire truck filled with cooling water is used for supplementing cooling water to the large-size wet cloth;
step six: after the fire source which is difficult to be cast and extinguished is covered by large-size wet cloth in the fifth step; repeating the third step to the fifth step until the fire on the fire scene is extinguished;
the fire-fighting truck in the first step comprises a truck body, a truck box, a hydraulic table, a hydraulic cylinder, a rotary table, an angle adjusting frame, a water pipe and a water cannon; the carriage is fixed at the tail part of the vehicle body and is used for storing cooling water or foam liquid, and the foam liquid is carbon dioxide liquid; the hydraulic platform is positioned at the head of the vehicle body; the hydraulic cylinder is detachably connected with the hydraulic platform; the rotary table is fixed at the upper end of the hydraulic cylinder; the angle adjusting frame is fixed on the rotary table and used for adjusting the launching angle of the water cannon; one end of the water pipe is communicated with the carriage, and the other end of the water pipe is communicated with the water cannon; the water cannon is positioned on the angle adjusting frame and used for launching cooling water or foam liquid; wherein,
the hydraulic table comprises a table body, a gear ring, a cam, a first gear, a first rack, a return spring and a pressing column, wherein four mounting grooves are uniformly distributed on the table body and are matched with the lower end of a hydraulic cylinder, and a blind hole is formed in the center of the table body; the gear ring is sleeved on the side wall of the mounting groove, and the inner side wall and the outer side wall of the gear ring are provided with teeth; the cam is positioned on the inner side of the gear ring, the cam is rotationally connected with the table body, teeth are arranged on the arc wall of the large end of the cam, and the cam is meshed with the gear ring; the first gear is positioned on the outer side of the gear ring, the height of the first gear is higher than that of the gear ring, and the first gear is meshed with the gear ring; the rack I is positioned at the lower part of the gear I, is in sliding fit with the table body, one end of the rack I is meshed with the gear I, and the other end of the rack I extends into the blind hole; the reset spring is sleeved on the first rack, and one end of the reset spring is abutted against the inner wall of the blind hole; the pressing column is located on the blind hole, and moves downwards to extrude the first rack to enable the first rack to slide in the platform body. When the hydraulic cylinder fixing device works, the pressing column is pressed into the blind hole, the pressing column extrudes the first rack, the return spring is compressed, the first rack moves to drive the first gear to rotate, the gear drives the gear ring to rotate, the gear ring rotates to drive the cam to rotate, the small end of the cam moves and clamps the hydraulic cylinder placed in the mounting groove towards the center of the gear ring, and the hydraulic cylinder is fixed by the hydraulic table; when the hydraulic cylinder is taken out, the pressing column is only required to be taken out from the blind hole, the reset spring resets, the cam resets, the hydraulic cylinder is loosened by the table body, the hydraulic cylinder is taken out, and the hydraulic cylinder is convenient to maintain and replace.
Three column sleeves are arranged on the inner wall of the blind hole; the column sleeve comprises a body, a cylindrical sliding body and a first spring, and the body is a quarter cylindrical shell; the inner arc surface of the body is provided with threads, and the body is matched with the pressing column; the cylindrical sliding body is vertically and fixedly connected with the body, is matched with a cylindrical sliding body groove arranged on the table body, and is connected with the table body in a sliding manner; the spring is sleeved on the cylindrical sliding body, and the first spring is located between the inner wall of the table body and the body. The during operation will press down the post and press down the messenger and press the post and get into in the blind hole, press down the post and push down and cooperate pivoted action after, press down the post can be pressed down to the blind hole very fast in, when pressing down, the column casing is pressed down the rotatory extrusion of post and is removed to keeping away from the blind hole central authorities, press the post and get into in the blind hole completely and static back, under the effect of spring one, the body with press the post laminating, the body will press the post to fix in the blind hole for hydraulic pressure platform fastens the pneumatic cylinder, is favorable to the quick installation of pneumatic cylinder.
The upper end face of the body is provided with an L-shaped hand breaking part, and the L-shaped hand breaking part is positioned outside the table body. When the blind hole pressing device works, before the pressing part is pressed downwards and is not rotated to be pressed, the L-shaped hand breaking part is broken off by hands, so that the pressing column can be directly pressed into the blind hole, and the pressing column does not need to be kept rotating when being pressed downwards; meanwhile, when the pressing column is taken out, the L-shaped hand breaking part is broken again by hand, and the pressing column is directly taken out, so that the pressing column is more convenient to use, the hydraulic cylinder is easily placed into the hydraulic table and clamped tightly, and the hydraulic cylinder is also easily taken out from the hydraulic table.
A movable sucker is arranged at the small end of the cam; the movable sucker comprises a swinging body and a sucker, one end of the swinging body is fixedly connected with the sucker into a whole, and the other end of the swinging body is movably connected with the small end of the cam; the disc surface of the sucker is matched with the outer wall of the hydraulic cylinder. When the hydraulic cylinder clamping device works, the movable sucker is arranged at the small end of the cam, and after the hydraulic cylinder is placed in the mounting groove, even if the small end of the cam is not directly aligned with the center of the gear ring, the small end of the cam is aligned to have small-amplitude deviation, the sucker on the cam can still clamp the hydraulic cylinder tightly, so that the clamping of the hydraulic cylinder by the cam is facilitated, and the hydraulic cylinder is fixed by the hydraulic table.
The gear ring comprises a plurality of segmentation bodies, curved connecting rods and elastic pins, the segmentation bodies are in an arc shape, connecting holes are formed in two ends of each segmentation body, and an inner concave part is formed in the hole wall of each connecting hole; the bending radian of the curved connecting rods is the same as that of the segmentation bodies, a plurality of curved connecting rods are arranged, the curved connecting rods are used for penetrating through the connecting holes to connect the segmentation bodies into a complete circle, and circular grooves are formed in the curved connecting rods; the elastic pin is located in the circular groove of the curved connecting rod, the upper end face of the elastic pin can be compressed to be flush with the upper end face of the curved connecting rod, and the elastic pin is matched with the inner concave part of the connecting hole. The during operation, the installation ring gear, the lateral wall department of placing the mounting groove into earlier with the segmentation body, install the segmentation body through the connecting hole with bent shape connecting rod again on, with bent shape connecting rod with a plurality of segmentation body coupling, make the segmentation body enclose the assembly that the ring gear was accomplished to synthetic a circle, even make the notch radius of mounting groove slightly less than the radius of ring gear, still can make the ring gear can install in the mounting groove, and simultaneously, the notch radius of mounting groove is less than the radius of ring gear, the mounting groove is also relatively fixed with the ring gear.
The spring pin comprises a cylindrical pin shell and a second spring, the second spring is located inside the cylindrical pin shell, one end of the second spring is fixedly connected with the shell bottom of the cylindrical pin shell, and the other end of the second spring extends out of the cylindrical pin shell and is fixedly connected with the bottom of the circular groove of the curved connecting rod. The during operation, when penetrating bent shape connecting rod in the connecting hole, will play the upper end of round pin and press and bent shape connecting rod surface parallel and level, make bent shape connecting rod can get into in the connecting hole smoothly, when the bullet round pin removes the interior concave part department of connecting hole, the bullet round pin resets under the effect of spring two, it stops bent shape connecting rod in the connecting hole of the segmentation body to play the round pin, make two adjacent segmentation body coupling fasten more, be difficult for droing, be favorable to the holistic firm of ring gear, made things convenient for the installation of ring gear.
One end of the first rack is provided with a sliding head, and the sliding head is located in the blind hole. During operation, the sliding head is arranged on the first rack, so that the pressing column can smoothly enter the blind hole, the extrusion of the pressing column on the first rack is facilitated, the speed of clamping the hydraulic cylinder by the cam is increased, and the hydraulic cylinder can be conveniently installed on the hydraulic platform.
The angle adjusting frame comprises an installation body, a second gear, a first motor, a second rack, a connecting rod and a turntable, and the installation body is fixed in the center of the rotary table; the second gear is rotationally connected with the mounting body; the second rack is positioned beside the second gear and meshed with the second gear; the turntable is positioned at the upper end of the mounting body and is rotationally connected with the mounting body; one end of the connecting rod is hinged with the edge of the rotary table, and the other end of the connecting rod is hinged with the second rack; the water cannon is fixed on the turntable; the first motor is fixed on the mounting body, the first motor drives the rotary table to rotate through the second gear, the second rack and the connecting rod, and the rotary table rotates to change the launching angle of the water cannon. When the water cannon shooting device works, the first motor drives the second gear to rotate, the second gear drives the second rack to do linear motion, the second rack drives the connecting rod to enable the rotary table to rotate, the rotary table rotates to change the shooting angle of the water cannon, and the first motor is driven to rotate positively and negatively to adjust the shooting angle of the water cannon.
The rotary table comprises a rotary body, a fixed table, a motor II and a gear III, the rotary body is positioned in the center of the fixed table, the rotary body is in running fit with the fixed table, and teeth are arranged on the side wall of the rotary body; the second motor is fixed at the edge of the fixed table and used for driving the third gear to rotate; and the third gear is fixed on a rotating shaft of the second motor and is meshed with the revolving body. When the water cannon shooting device works, the motor II drives the gear III to rotate in the positive and negative directions, the gear III rotates to drive the revolving body to rotate on the fixed table, the revolving body rotates to adjust the revolving table, the direction of the angle adjusting frame on the revolving table is changed, and then the shooting direction of the water cannon is changed.
The invention has the following beneficial effects:
1. according to the fire extinguishing method, the fire source is cooled by cooling water, the fire source is separated from oxygen by using the foam liquid, the fire source is covered by a large-size wet part, and multiple fire extinguishing modes are combined, so that the fire extinguishing method is beneficial to quickly extinguishing a large fire of a house, and the fire rescue efficiency is improved.
2. The fire extinguishing method provided by the invention has the advantages that the fire extinguishing vehicle is loaded with different fire extinguishing agents to extinguish the house fire, and various fire extinguishing agents are matched for use, so that the fire extinguishing vehicle can quickly reach the fire scene, and the efficiency of house fire rescue is improved.
3. According to the fire extinguishing method, the hydraulic platform and the hydraulic cylinder are matched to work, so that the hydraulic cylinder of the fire extinguishing vehicle and other accessories on the hydraulic cylinder can be quickly and integrally replaced during maintenance, the maintenance period of the fire extinguishing vehicle is favorably shortened, the fire extinguishing vehicle can be quickly put into use, and the residential fire rescue efficiency is improved.
4. According to the fire extinguishing method, the hydraulic cylinder, the rotary table, the angle adjusting frame, the water pipe and the water cannon are matched to work, the hydraulic cylinder is used for adjusting the vertical height of the water cannon, the rotary table is used for adjusting the horizontal position of the water cannon, and the angle adjusting frame is used for adjusting the vertical position of the water cannon, so that the water cannon of the fire extinguishing vehicle can be used for extinguishing fire by spraying a fire extinguishing agent flexibly in multiple angles, and the fire extinguishing efficiency of residential fires is improved.
Drawings
FIG. 1 is a flow chart of a method of the present invention;
FIG. 2 is a schematic view of the fire fighting vehicle of the present invention;
FIG. 3 is a schematic view of the hydraulic table of the present invention;
FIG. 4 is an enlarged view at C with respect to FIG. 3;
FIG. 5 is a schematic view of the structure of the body of the present invention;
FIG. 6 is a partial schematic view of the hydraulic table clamping stationary hydraulic cylinder of the present invention;
FIG. 7 is an enlarged view taken at A with respect to FIG. 6;
FIG. 8 is an enlarged view at B with respect to FIG. 6;
in the figure: the hydraulic control device comprises a vehicle body 1, a compartment 2, a hydraulic table 3, a table body 31, a mounting groove 311, a blind hole 312, a column sleeve 32, a body 321, a cylindrical sliding body 322, a first spring 323, an L-shaped hand-breaking part, a gear ring 33, a segmented body 331, a connecting hole 3311, a curved connecting rod 332, a circular groove, a spring pin 333, a cylindrical pin shell 3331, a second spring 3332, a cam 34, a movable suction cup 35, a swinging body 351, a suction cup 352, a first gear 36, a first rack 37, a sliding head 371, a pressing column 38, a hydraulic cylinder 4, a rotary table 5, a rotary body 51, a fixed table 52, a second motor 53, a third gear 54, an angle adjusting frame 6, a mounting body 61, a second gear 62, a first motor 63, a second rack 64, a connecting rod 65, a rotary table 66, a.
Detailed Description
A fire extinguishing method according to an embodiment of the present invention will be described below with reference to fig. 1 to 8.
As shown in fig. 1 and 3, a fire extinguishing method according to the present invention comprises the steps of:
the method comprises the following steps: people are evacuated from the fire scene, and part of inflammable matters are isolated;
step two: after people are evacuated and inflammable matters are separated in the first step, preparing a fire-fighting truck with foam liquid in the truck box 2 and a fire-fighting truck with cooling water in the truck box 2 respectively and driving the fire-fighting trucks to a fire scene; according to the size of a fire, a plurality of fire extinguishing fire fighting vehicles with foam liquid in the carriage 2 and a plurality of fire extinguishing fire fighting vehicles with cooling water in the carriage 2 can be prepared according to the ratio of 1: 1; wherein the foam liquid is carbon dioxide liquid;
step three: after two fire-fighting fire trucks on the fire scene in the second step are prepared, the power supply of the house is turned off, the fire-fighting fire trucks filled with cooling water are firstly used for spraying water to a fire source for fire extinguishing, part of the fire source is extinguished, and the temperature of the fire source is reduced; meanwhile, a fire extinguishing fire truck filled with foam liquid is used for spraying the foam liquid to extinguish fire, so that the foam liquid directly covers the previously sprayed cooling water, the fire source is separated from the air, the temperature of the fire source is reduced, and the fire is prevented from expanding;
step four: after the fire source is sprayed with cooling water and foam liquid, spraying cooling water to the combustibles around the fire source by using a fire-fighting truck filled with cooling water, and spraying foam liquid to the combustibles around the fire source by using the fire-fighting truck filled with foam liquid, so that the foam liquid directly covers the previously sprayed cooling water, and the fire source and the combustibles around the fire source are separated, thereby avoiding the expansion of the ignition range;
step five: after the fire source and surrounding combustible materials are separated in the fourth step, a large-size wet cloth is adopted to cover part of the fire source which is not easy to extinguish, the large-size wet cloth is just large enough to cover the fire source, and a fire extinguishing fire truck filled with cooling water is used for supplementing cooling water to the large-size wet cloth;
step six: after the fire source which is difficult to be cast and extinguished is covered by large-size wet cloth in the fifth step; repeating the third step to the fifth step until the fire on the fire scene is extinguished;
the fire-fighting truck in the first step comprises a truck body 1, a truck box 2, a hydraulic platform 3, a hydraulic cylinder 4, a rotary platform 5, an angle adjusting frame 6, a water pipe 7 and a water cannon 8; the carriage 2 is fixed at the tail part of the carriage body 1, the carriage 2 is used for storing cooling water or foam liquid, and the foam liquid is carbon dioxide liquid; the hydraulic platform 3 is positioned at the head part of the vehicle body 1; the hydraulic cylinder 4 is detachably connected with the hydraulic table 3; the rotary table 5 is fixed at the upper end of the hydraulic cylinder 4; the angle adjusting frame 6 is fixed on the rotary table 5, and the angle adjusting frame 6 is used for adjusting the launching angle of the water cannon 8; one end of the water pipe 7 is communicated with the compartment 2, and the other end of the water pipe 7 is communicated with the water cannon 8; the water cannon 8 is positioned on the angle adjusting frame 6, and the water cannon 8 is used for launching cooling water or foam liquid; wherein,
the hydraulic table 3 comprises a table body 31, a gear ring 33, a cam 34, a first gear 36, a first rack 37, a return spring and a pressing column 38, wherein four mounting grooves 311 are uniformly distributed on the table body 31, the mounting grooves 311 are matched with the lower end of the hydraulic cylinder 4, and a blind hole 312 is formed in the center of the table body 31; the gear ring 33 is sleeved on the side wall of the mounting groove 311, and the inner side wall and the outer side wall of the gear ring 33 are provided with teeth; the cam 34 is positioned on the inner side of the gear ring 33, the cam 34 is rotationally connected with the table body 31, the large-end arc wall of the cam 34 is provided with teeth, and the cam 34 is meshed with the gear ring 33; the first gear 36 is positioned outside the gear ring 33, the height of the first gear 36 is higher than that of the gear ring 33, and the first gear 36 is meshed with the gear ring 33; the first rack 37 is positioned at the lower part of the first gear 36, the first rack 37 is in sliding fit with the table body 31, one end of the first rack 37 is meshed with the first gear 36, and the other end of the first rack 37 extends into the blind hole 312; the reset spring is sleeved on the first rack 37, and one end of the reset spring abuts against the inner wall of the blind hole 312; the pressing column 38 is located on the blind hole 312, and the pressing column 38 moves downwards to press the rack I37, so that the rack I37 slides in the table body 31. When the hydraulic cylinder fixing device works, the pressing column 38 is pressed into the blind hole 312, the pressing column 38 extrudes the rack I37, the return spring is compressed, the rack I37 moves to drive the gear I36 to rotate, the gear I36 drives the gear ring 33 to rotate, the gear ring 33 rotates to drive the cam 34 to rotate, the small end of the cam 34 moves and clamps the hydraulic cylinder 4 placed in the mounting groove 311 towards the center of the gear ring 33, and the hydraulic cylinder 4 is fixed by the hydraulic table 3; when the hydraulic cylinder 4 is taken out, the pressing column 38 only needs to be taken out of the blind hole 312, the return spring is reset, the cam 34 is reset, the hydraulic cylinder 4 is loosened by the table body 31, the hydraulic cylinder 4 is taken out, and maintenance and replacement of the hydraulic cylinder 4 are facilitated.
As shown in fig. 3 and 5, three pieces of column sleeves 32 are arranged on the inner wall of the blind hole 312; the column sleeve 32 comprises a body 321, a cylindrical sliding body 322 and a first spring 323, wherein the body 321 is in a shape of a quarter cylindrical shell; the inner arc surface of the body 321 is provided with threads, and the body 321 is matched with the pressing column 38; the cylindrical sliding body 322 is vertically and fixedly connected with the body 321, the cylindrical sliding body 322 is matched with a groove of the cylindrical sliding body 322 arranged on the table body 31, and the cylindrical sliding body 322 is connected with the table body 31 in a sliding manner; the first spring 323 is sleeved on the cylindrical sliding body 322, and the first spring 323 is located between the inner wall of the table body 31 and the body 321. During operation, to press the post 38 and press the messenger and press the post 38 and enter blind hole 312 in, press post 38 to push down and cooperate the pivoted action after, press the post 38 can be pressed down in blind hole 312 very fast, when pressing, the column jacket 32 is pressed the rotatory extrusion of post 38 and is moved to keeping away from blind hole 312 central authorities, press post 38 and get into blind hole 312 completely and static back, under the effect of spring 323, body 321 and press the laminating of post 38, body 321 will press the post 38 to fix in blind hole 312, make hydraulic pressure platform 3 fasten pneumatic cylinder 4, be favorable to the quick installation of pneumatic cylinder 4.
As shown in fig. 3, an L-shaped hand-breaking portion 324 is disposed on the upper end surface of the body 321, and the L-shaped hand-breaking portion 324 is located outside the table body 31. In operation, before the pressing column is pressed down and is not rotated, the L-shaped hand-breaking portion 324 is broken off by hand, so that the pressing column 38 can be directly pressed into the blind hole 312 without keeping the pressing column 38 rotating during pressing down; meanwhile, when the pressing column 38 is taken out, the L-shaped hand breaking portion 324 is broken again by hand, and the pressing column 38 is directly taken out, so that the pressing column 38 is more convenient to use, the hydraulic cylinder 4 is easily placed into the hydraulic table 3 to be clamped, and the hydraulic cylinder 4 is also easily taken out of the hydraulic table 3.
As shown in fig. 6 and 8, the small end of the cam 34 is provided with a movable suction cup 35; the movable suction cup 35 comprises a swinging body 351 and a suction cup 352, one end of the swinging body 351 is fixedly connected with the suction cup 352 into a whole, and the other end of the swinging body 351 is movably connected with the small end of the cam 34; the disc surface of the suction cup 352 is matched with the outer wall of the hydraulic cylinder 4. When the hydraulic cylinder 4 clamping device works, the movable suction cups 35 are arranged at the small ends of the cams 34, and after the hydraulic cylinder 4 is placed in the installation groove 311, even if the small ends of the cams 34 are not directly aligned with the center of the gear ring 33, the small ends of the cams 34 are aligned to have small amplitude deviation, the suction cups 352 on the cams 34 can still clamp the hydraulic cylinder 4, so that the hydraulic cylinder 4 can be clamped by the cams 34, and the hydraulic cylinder 4 can be fixed by the hydraulic table 3.
As shown in fig. 3 and 6, the gear ring 33 includes a plurality of segment bodies 331, a curved connecting rod 332, and a spring pin 333, the segment bodies 331 are provided in plurality, the segment bodies 331 are arc-shaped, both ends of the segment bodies 331 are provided with connecting holes 3311, and the hole walls of the connecting holes 3311 are provided with concave portions; the curved connecting rods 332 have the same curved radian as the segmenting body 331, the curved connecting rods 332 are provided with a plurality of curved connecting rods 332, the curved connecting rods 332 are used for penetrating into the connecting holes 3311 to connect the segmenting body 331 into a complete circle, and the curved connecting rods 332 are provided with circular grooves; the elastic pin 333 is located in the circular groove of the curved connecting rod 332, the upper end surface of the elastic pin 333 can be compressed to be flush with the upper end surface of the curved connecting rod 332, and the elastic pin 333 is matched with the inner concave part of the connecting hole 3311. During operation, gear ring 33 is installed, the subsection body 331 is firstly placed on the side wall of installation groove 311, then curved connecting rod 332 is installed on the subsection body 331 through connecting hole 3311, the plurality of subsection bodies 331 are connected through curved connecting rod 332, the subsection bodies 331 are enabled to be enclosed into a circle to complete assembly of gear ring 33, even if the radius of the notch of installation groove 311 is slightly smaller than that of gear ring 33, gear ring 33 can still be installed in installation groove 311, meanwhile, the radius of the notch of installation groove 311 is smaller than that of gear ring 33, and gear ring 33 is easily fixed by installation groove 311.
As shown in fig. 6 and 7, the spring pin 333 includes a cylindrical pin housing 3331 and a second spring 3332, wherein the second spring 3332 is located inside the cylindrical pin housing 3331, one end of the second spring 3332 is fixedly connected to the bottom of the cylindrical pin housing 3331, and the other end of the second spring 3332 extends out of the cylindrical pin housing 3331 and is fixedly connected to the bottom of the circular groove of the curved connecting rod 332. In operation, when penetrating curved connecting rod 332 into connecting hole 3311, press the upper end of bullet round pin 333 to with curved connecting rod 332 surface parallel and level, make curved connecting rod 332 can get into connecting hole 3311 smoothly, when bullet round pin 333 moves the interior recess department of connecting hole 3311, bullet round pin 333 resets under the effect of spring two 3332, bullet round pin 333 stops curved connecting rod 332 in the connecting hole 3311 of segmentation body 331, make two adjacent segmentation bodies 331 connect more tightly, be difficult for droing, be favorable to the holistic firm of ring gear 33, the installation of ring gear 33 has been made things convenient for.
As shown in fig. 3 and 6, one end of the first rack 37 is provided with a slider 371, and the slider 371 is located in the blind hole 312. During operation, be provided with slider 371 on rack one 37, be favorable to pressing in post 38 gets into blind hole 312 smoothly, made things convenient for the extrusion of pressing post 38 to rack one 37, improved the speed that cam 34 presss from both sides tight pneumatic cylinder 4, the pneumatic cylinder 4 of being convenient for is installed on hydraulic platform 3.
As shown in fig. 2, the angle adjusting bracket 6 includes a mounting body 61, a second gear 62, a first motor 63, a second rack 64, a connecting rod 65 and a turntable 66, wherein the mounting body 61 is fixed at the center of the rotary table 5; the second gear 62 is rotationally connected with the mounting body 61; the second rack 64 is positioned beside the second gear 62, and the second rack 64 is meshed with the second gear 62; the rotary disc 66 is positioned at the upper end of the mounting body 61, and the rotary disc 66 is rotationally connected with the mounting body 61; one end of the connecting rod 65 is hinged with the edge of the rotary table 66, and the other end of the connecting rod 65 is hinged with the second rack 64; the water cannon 8 is fixed on the rotary disc 66; the first motor 63 is fixed on the mounting body 61, the first motor 63 drives the rotary table 66 to rotate through the second gear 62, the second rack 64 and the connecting rod 65, and the rotary table 66 rotates to change the launching angle of the water cannon 8. When the water cannon shooting angle adjusting device works, the first motor 63 drives the second gear 62 to rotate, the second gear 62 rotates to drive the second rack 64 to do linear motion, the second rack 64 drives the connecting rod 65 to enable the rotary disc 66 to rotate, the rotary disc 66 rotates to change the shooting angle of the water cannon 8, and the first motor 63 is driven to rotate positively and negatively to adjust the shooting angle of the water cannon 8.
As shown in fig. 2, the revolving platform 5 includes a revolving body 51, a fixed platform 52, a second motor 53 and a third gear 54, the revolving body 51 is located in the center of the fixed platform 52, the revolving body 51 is in running fit with the fixed platform 52, and the side wall of the revolving body 51 is provided with teeth; the second motor 53 is fixed at the edge of the fixed table 52, and the second motor 53 is used for driving the third gear 54 to rotate; the third gear 54 is fixed on the rotating shaft of the second motor 53, and the third gear 54 is meshed with the rotator 51. During operation, the second motor 53 drives the third gear 54 to rotate positively and negatively, the third gear 54 rotates to drive the revolving body 51 to rotate on the fixed table 52, and the revolving body 51 rotates to adjust the revolving table 5, so that the direction of the angle adjusting frame 6 on the revolving table 5 is changed, and the launching direction of the water cannon 8 is further changed.
The specific use flow is as follows:
when the installation structure is used, the gear ring 33 is installed, the subsection bodies 331 are firstly placed on the side wall of the installation groove 311, then the curved connecting rods 332 are installed on the subsection bodies 331 through the connecting holes 3311, the plurality of subsection bodies 331 are connected through the curved connecting rods 332, the subsection bodies 331 are encircled into a circle to complete the assembly of the gear ring 33, even if the radius of the notch of the installation groove 311 is slightly smaller than that of the gear ring 33, the gear ring 33 can still be installed in the installation groove 311, meanwhile, the radius of the notch of the installation groove 311 is smaller than that of the gear ring 33, and the gear ring 33 is easily fixed by the installation groove 311; in the process of penetrating the curved connecting rod 332 into the connecting hole 3311, the upper end of the elastic pin 333 is pressed to be flush with the surface of the curved connecting rod 332, so that the curved connecting rod 332 can smoothly enter the connecting hole 3311, when the elastic pin 333 moves to the concave part of the connecting hole 3311, the elastic pin 333 resets under the action of the second spring 3332, the elastic pin 333 stops the curved connecting rod 332 in the connecting hole 3311 of the segment body 331, so that the two adjacent segment bodies 331 are connected more firmly and are not easy to fall off, the whole firmness of the gear ring 33 is facilitated, and the installation of the gear ring 33 is facilitated.
When the hydraulic cylinder 4 is clamped, the L-shaped hand-breaking part 324 is broken by hand, so that the pressing column 38 can be directly pressed into the blind hole 312, the body 321 is attached to the pressing column 38 under the action of the first spring 323, the body 321 fixes the pressing column 38 in the blind hole 312, and the pressing column 38 does not need to keep rotating when pressed; meanwhile, when the pressing column 38 is taken out, the L-shaped hand breaking part 324 is broken again by hand, the pressing column 38 is directly taken out, after the pressing column 38 enters the blind hole 312, the pressing column 38 extrudes the rack I37, the rack I37 is provided with the sliding head 371, the pressing column 38 can smoothly enter the blind hole 312, meanwhile, the return spring is compressed, the rack I37 moves to drive the gear I36 to rotate, the gear I36 drives the gear ring 33 to rotate, the gear ring 33 rotates to drive the cam 34 to rotate, and the small end of the cam 34 moves and clamps the hydraulic cylinder 4 placed in the mounting groove 311 towards the center of the gear ring 33; the hydraulic table 3 fixes the hydraulic cylinder 4; when the hydraulic cylinder 4 is taken out, the pressing column 38 only needs to be taken out of the blind hole 312, the return spring is reset, the cam 34 is reset, and the hydraulic cylinder 4 is loosened by the table body 31, so that the maintenance and the replacement of the hydraulic cylinder 4 are facilitated;
when the orientation of the water cannon 8 is adjusted, the gear II 62 is driven to rotate by the motor I63, the gear II 62 rotates to drive the rack II 64 to do linear motion, the rack II 64 drives the connecting rod 65 to enable the turntable 66 to rotate, the rotation of the turntable 66 changes the launching angle of the water cannon 8, and the motor I63 is driven to rotate positively and negatively to adjust the launching angle of the water cannon 8; the gear three 54 is driven by the motor two 53 to rotate positively and negatively, the gear three 54 rotates to drive the revolving body 51 to rotate on the fixed table 52, the revolving body 51 rotates to adjust the revolving table 5, the direction of the angle adjusting frame 6 on the revolving table 5 is changed, and the launching direction of the water cannon 8 is further changed.
While one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the scope of the present invention.
(A) In the above embodiment, the post sleeve is reset by the spring, but not limited thereto, and the spring may be replaced by a hollow cylindrical rubber sleeve.
(B) In the above embodiment, the foam concentrate is a carbon dioxide solution, but the foam concentrate is not limited thereto, and may be a mixed solution of aluminum sulfate and sodium bicarbonate solution, where the aluminum sulfate and sodium bicarbonate solution are separated before injection, and the aluminum sulfate and sodium bicarbonate solution are mixed and injected during injection.
Industrial applicability
According to the invention, the hydraulic cylinder, the rotary table, the angle adjusting frame, the water pipe and the water cannon are matched with each other to work, so that the water cannon of the fire-fighting truck can flexibly spray fire-extinguishing agents at multiple angles to extinguish fire, and the improvement of the fire-extinguishing efficiency of residential fire is facilitated; the fire extinguishing method is therefore useful in the field of fire fighting technology.
Claims (9)
1. A method of extinguishing a fire, characterized by: the method comprises the following steps:
the method comprises the following steps: people are evacuated from the fire scene, and part of inflammable matters are isolated;
step two: after people are evacuated and inflammable matters are separated in the first step, preparing a fire-fighting truck with foam liquid in a truck box and a fire-fighting truck with cooling water in the truck box respectively and driving the fire-fighting trucks to a fire scene; according to the size of a fire, a plurality of fire extinguishing fire fighting vehicles with foam liquid in the carriage and a plurality of fire extinguishing fire fighting vehicles with cooling water in the carriage can be prepared according to the ratio of 1: 1;
step three: after two fire-fighting fire trucks on the fire scene in the second step are prepared, spraying water to a fire source by using the fire-fighting fire trucks filled with cooling water to extinguish the fire, extinguishing part of the fire source and reducing the temperature of the fire source; meanwhile, a fire extinguishing fire truck filled with foam liquid is used for spraying the foam liquid to a fire source to extinguish fire, the fire source is separated from air, the temperature of the fire source is reduced, and the fire is prevented from expanding;
step four: after the fire source is sprayed with cooling water and foam liquid, spraying cooling water to the combustibles around the fire source by using a fire-fighting truck filled with cooling water, and spraying foam liquid to the combustibles around the fire source by using the fire-fighting truck filled with foam liquid, so that the fire source and the combustibles around the fire source are separated, and the fire-catching range is prevented from being expanded;
step five: after the fire source and surrounding combustible materials are separated in the fourth step, a large-size wet cloth is adopted to cover part of the fire source which is not easy to extinguish, the large-size wet cloth is just large enough to cover the fire source, and a fire extinguishing fire truck filled with cooling water is used for supplementing cooling water to the large-size wet cloth;
step six: after the fire source which is difficult to be cast and extinguished is covered by large-size wet cloth in the fifth step; repeating the third step and the fifth step until the fire on the fire scene is extinguished;
the fire-fighting truck in the first step comprises a truck body (1), a truck box (2), a hydraulic table (3), a hydraulic cylinder (4), a rotary table (5), an angle adjusting frame (6), a water pipe (7) and a water cannon (8); the carriage (2) is fixed at the tail part of the vehicle body (1), and the carriage (2) is used for storing cooling water or foam liquid; the hydraulic platform (3) is positioned at the head part of the vehicle body (1); the hydraulic cylinder (4) is detachably connected with the hydraulic platform (3); the rotary table (5) is fixed at the upper end of the hydraulic cylinder (4); the angle adjusting frame (6) is fixed on the rotary table (5), and the angle adjusting frame (6) is used for adjusting the launching angle of the water cannon (8); one end of the water pipe (7) is communicated with the compartment (2), and the other end of the water pipe (7) is communicated with the water cannon (8); the water cannon (8) is positioned on the angle adjusting frame (6), and the water cannon (8) is used for launching cooling water or foam liquid; wherein,
the hydraulic table (3) comprises a table body (31), a gear ring (33), a cam (34), a first gear (36), a first rack (37) and a pressing column (38), four mounting grooves (311) are uniformly distributed on the table body (31), the mounting grooves (311) are matched with the lower end of the hydraulic cylinder (4), and a blind hole (312) is formed in the center of the table body (31); the gear ring (33) is sleeved on the side wall of the mounting groove (311), and teeth are arranged on the inner side wall and the outer side wall of the gear ring (33); the cam (34) is positioned on the inner side of the gear ring (33), the cam (34) is rotationally connected with the table body (31), teeth are arranged on the arc wall of the large end of the cam (34), and the cam (34) is meshed with the gear ring (33); the first gear (36) is positioned outside the gear ring (33), the height of the first gear (36) is higher than that of the gear ring (33), and the first gear (36) is meshed with the gear ring (33); the first rack (37) is positioned at the lower part of the first gear (36), the first rack (37) is in sliding fit with the table body (31), one end of the first rack (37) is meshed with the first gear (36), and the other end of the first rack (37) extends into the blind hole (312); the pressing column (38) is located on the blind hole (312), and the pressing column (38) moves downwards to press the first rack (37) so that the first rack (37) slides in the table body (31).
2. A method of extinguishing a fire according to claim 1, wherein: three column sleeves (32) are arranged on the inner wall of the blind hole (312); the column sleeve (32) comprises a body (321), a cylindrical sliding body (322) and a first spring (323), wherein the body (321) is a quarter cylindrical shell; the inner arc surface of the body (321) is provided with threads, and the body (321) is matched with the pressing column (38); the cylindrical sliding body (322) is vertically and fixedly connected with the body (321), the cylindrical sliding body (322) is matched with a groove of the cylindrical sliding body (322) arranged on the table body (31), and the cylindrical sliding body (322) is in sliding connection with the table body (31); the first spring (323) is sleeved on the cylindrical sliding body (322), and the first spring (323) is located between the inner wall of the table body (31) and the body (321).
3. A method of extinguishing a fire according to claim 2, wherein: an L-shaped hand-breaking part (324) is arranged on the upper end face of the body (321), and the L-shaped hand-breaking part (324) is positioned outside the table body (31).
4. A method of extinguishing a fire according to claim 1, wherein: a movable sucker (35) is arranged at the small end of the cam (34); the movable sucker (35) comprises a swinging body (351) and a sucker (352), one end of the swinging body (351) is fixedly connected with the sucker (352) into a whole, and the other end of the swinging body (351) is movably connected with the small end of the cam (34); the disc surface of the sucking disc (352) is matched with the outer wall of the hydraulic cylinder (4).
5. A method of extinguishing a fire according to claim 1, wherein: the gear ring (33) comprises a plurality of sectional bodies (331), curved connecting rods (332) and elastic pins (333), the sectional bodies (331) are arc-shaped, connecting holes (3311) are formed in two ends of each sectional body (331), and an inner concave part is formed in the hole wall of each connecting hole (3311); the bending radian of the curved connecting rods (332) is the same as that of the sectional bodies (331), a plurality of curved connecting rods (332) are arranged, the curved connecting rods (332) are used for penetrating into connecting holes (3311) to connect the sectional bodies (331) into a complete circle, and circular grooves are formed in the curved connecting rods (332); the elastic pin (333) is positioned in the circular groove of the curved connecting rod (332), the upper end face of the elastic pin (333) can be compressed to be flush with the upper end face of the curved connecting rod (332), and the elastic pin (333) is matched with the inner concave part of the connecting hole (3311).
6. A method of extinguishing a fire according to claim 5, wherein: the elastic pin (333) comprises a cylindrical pin shell (3331) and a second spring (3332), the second spring (3332) is located inside the cylindrical pin shell (3331), one end of the second spring (3332) is fixedly connected with the bottom of the cylindrical pin shell (3331), and the other end of the second spring (3332) extends out of the cylindrical pin shell (3331) and is fixedly connected with the bottom of a circular groove of the curved connecting rod (332).
7. A method of extinguishing a fire according to claim 1, wherein: one end part of the first rack (37) is provided with a sliding head (371), and the sliding head (371) is positioned in the blind hole (312).
8. A method of extinguishing a fire according to claim 1, wherein: the angle adjusting frame (6) comprises an installation body (61), a second gear (62), a first motor (63), a second rack (64), a connecting rod (65) and a turntable (66), and the installation body (61) is fixed in the center of the rotary table (5); the second gear (62) is rotationally connected with the mounting body (61); the second rack (64) is positioned beside the second gear (62), and the second rack (64) is meshed with the second gear (62); the rotary table (66) is positioned at the upper end of the mounting body (61), and the rotary table (66) is rotationally connected with the mounting body (61); one end of the connecting rod (65) is hinged with the edge of the rotating disc (66), and the other end of the connecting rod (65) is hinged with the second rack (64); the water cannon (8) is fixed on the rotary disc (66); the first motor (63) is fixed on the mounting body (61), the first motor (63) drives the rotary table (66) to rotate through the second gear (62), the second rack (64) and the connecting rod (65), and the rotary table (66) rotates to change the launching angle of the water cannon (8).
9. A method of extinguishing a fire according to claim 1, wherein: the rotary table (5) comprises a rotary body (51), a fixed table (52), a second motor (53) and a third gear (54), the rotary body (51) is located in the center of the fixed table (52), the rotary body (51) is in running fit with the fixed table (52), and teeth are arranged on the side wall of the rotary body (51); the second motor (53) is fixed at the edge of the fixed table (52), and the second motor (53) is used for driving the third gear (54) to rotate; the third gear (54) is fixed on a rotating shaft of the second motor (53), and the third gear (54) is meshed with the revolving body (51).
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